Device for effecting the radiation of heat.



No. 826,008. PATENTED JULY 17, '1906.

- S. W. ZENT. I

DEVICE FOR EPFECTING THE RADIATION OF HEAT.

APPLIGATION FILED 12111;.15, 1904. RENEWED DEC. 27, 1905.

UNITE STATES PATENT orrron.

SGHUYLER ZENT, OF EVANSVILLE, INDIANA, ASSIGNOR TO THE ZENT AUTOMOBILEMANUFACTURING COMPANY, OF. BELLEFON- 'IAINE, OHIO.

DEVICE FOR EFFECTING-THEBADIATION OF HEAT.

Specification of Letters Patent.

Patented July 17, 1906.

Application filed February 15,1904. Renewed ljeceniber 27, 1905. SerialHo. 298,500.

To all whom it may concern:

Be it known that I, SCHUYLER W. ZENT, a citizen of the United States,residing at Evansville, county of Vanderburg, and State of Indiana, haveinvented certain new and useful Improvements in Devices for Efiectingthe Radiation of Heat, of which the following'is a specification.

My invention relates to a method for effecting the rapid radiation ofheat from objects exposed to a hi h temperature, and especially toreducin t e temperature of internal-combustion cy' ders.

The object of my invention is to provide means for the reduction of suchtemperature that will combine lightness of weight with effectiveness. Iaccomplish this result by means of heat-conducting fins, which areattached to and radiate from the outside surface of the cylinder.

In the drawings which form apart of this specification, Figure 1 is asection of the surface of a cylinder, showing a number of myheat-radiating fins in position. Fig. 2 is a section of Fig. 1 on line XX. Fig. 3 is also a section of the cylinder, showing a fin andcorking-strip before the fin has been permanently secured in thecylinder. Fig. 4 is a section of a metal sheet, showing ragged edges Don the fins; and Fig. 5 is a trans' verse section of the cylinder.

A represents the dovetailed grooves which are madein the circumferenceof the cylinder. I ext end these dovetailed grooves longitudinally ofthe cylinder; but should I desire I may extend them completely aroundthe cylinder, and particularly are these methods applicable to the headof the cylinder.

B is the fin, which is secured in A. These fins are preferably made inmetal sheets out of a flat piece of metal sawed at the distance desired,as shown in Fig. 4. This sawingis done in such manner as to leave'theedges of the fins rough or corrugated and extends to about the outsidesurface of the cylinder. I also groove the sides of these fins by ress'cutting, rolling, or any other esirab e method. By having these finsroughened on the edges and grooved on the sides I greatly increase theirradiating-surface.

C is a strip of narrow heat-conducting metal, which is placed alongsidethe lower ends of the fins in aperture A.

' To apply my invention to the cy der, I first make the proper groove Ain the cylinder. I then place my sheet of heat-conducting metal, sawedas above described, in the a erture A, one end being in the groove and te other radiating from the cylinder. I then place the heat-conductingmetal strip C in the aperture A alongside the lower end of B, as shownin the first fin in 5. I then cork, or tamp C down securely, and causesthe groove A to be entirely filled, thus holding fin B securely in A, asshown in second fin in Fig. 5. I twist the fins, as shownin Figs. .1 and2 and in the third fin in 5, to give more free circulation to the air.As the cylinder becomes heated the fins in contact therewith receive aportion of said heat and radiate it into the surrounding atmosphere,While I may have the aperture A any desirable shape, Ifind that byhaving it as shown the heat radiation is materially increased.

Having fully described my invention, what I claim asnew, and desire tosecure by Letters Patent, is-

1. In a device for effecting the radiation of heat, the combination witha surface subject to heat effects,having grooves which are undercut intheir inner portions, of heat-radiating members seated in said groovesin continuation along the length of said grooves, and projecting freelyyond the surface aforesaid, and independent strips tamped or forced intoone side ofsaid grooves alongside the heat-radiating members which pressthe latter into the opposite undercut portions of the grooves.

2. In a device for effecting the radiation of heat, the combination witha surface, subject to heatefiects, having undercut grooves, of

heat-radiating fins twisted at their base and seated in said grooves androjecting from the surface aforesaid, and ependent strips tamped orforced into one side of said coves alongside the-heat-radiating fins whipress the latter into the o posite undercut portions of the grooves andt ves fill the remaininglllindercut port-ions of the grooves.

testimony whereof I hereuntoaflix my signature in the presence of twowitn.

. SCHUYLER W. ZENT. Witn;

Pnnor 0. Home. FRANK C. Gonn.

